C1   VERIFIED  billing/refunds.py:11    fails before (failed Failed: DID NOT RAISE ValueError), passes after
C2   FAIL      billing/refunds.py:8     evidence also passes before the fix
C3   VERIFIED  billing/invoice.py:3     fails before (failed assert 1804 == 1805), passes after
C4   FAIL      billing/api.py:6         before the fix it errors (ImportError), never reached old code
C5   VERIFIED  billing/refunds.py:12    fails before (failed AssertionError), passes after
C6   REVIEWER  billing/refunds.py:7     style: renamed amt2 -> value
C7   VERIFIED  billing/refunds.py:9     fails before (failed Failed: DID NOT RAISE ValueError), passes after
C8   REVIEWER  billing/refunds.py:11    declined: refunds for one order are serialized by the queue partition 
C9   FAIL      billing/refunds.py:13    evidence also passes before the fix
